Home / 385,299.66-531,734.19-215,523.66

Finding the Fourth Proportional to 385,299.66, 531,734.19 and 215,523.66

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Solution

The fourth proportional to 385,299.66, 531,734.19 and 215,523.66 is: 297,434.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,299.66 : 531,734.19 = 215,523.66 : x
  2. Step 2: Convert to fraction form
    385,299.66/531,734.19 = 215,523.66/x
  3. Step 3: Cross multiply
    385,299.66x = 531,734.19 × 215,523.66
  4. Step 4: Simplify right side
    385,299.66x = 114,601,298,775.94
  5. Step 5: Solve for x
    x = 114,601,298,775.94/385,299.66
  6. Step 6: Final answer
    x = 297,434.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.